You have to edit /etc/default/octoprint and change line
DAEMON_ARGS="--port=$PORT"
to
DAEMON_ARGS="--host 192.168.1.xxx --port=$PORT"
You have to edit /etc/default/octoprint and change line
DAEMON_ARGS="--port=$PORT"
DAEMON_ARGS="--host 192.168.1.xxx --port=$PORT"